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Setup & License forum

newbie help: "Unknown document version 25.0" and "Cannot read plan file"


Hello! I am a total newbie and sincere apologies for posting this.


I'm just going through the first modules of the beginners course. I downloaded sample projects so I can practise navigation (, however I couldn't open them.


The error is "Unknown document version 25.0" and "Cannot read plan file". I am using a MacOS BigSur with the latest Archicad.


Sorry for the bother again, I'm not even sure if this is the right forum. Any help is appreciated! 


Noemi Balogh
Community Admin
Community Admin

Hi Antz,

Welcome here!

Could you please check and take a screenshot of what you see when opening the project?

I'm curious about this:



Please share this with us, so hopefully we can help you better.


Noémi Balogh

Customer Engagement Expert, Community Admin

Eduardo Rolon

Looks like you are trying to open a file made with the current version of Archicad (25) with a previous version.

Solution is to download AC25.

Alternate solution to get another user in your office to open in 25 and save as the previous version (24).


I also move your post to SetUp and License.

eduardo rolón AIA NCARB
Another of the forum moderators.
Macbook Pro M1 Max 64GB ram
OS X 10.XX latest
AC25 US/INT -> AC08
Puerto Rico, BVI, Miami

Vectorworks 2023

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